Carburetor



Sept. 27, 192.8. N 2,131,246

CARBURETOR Filed Oct. 27, 1956 I Fciy lm:- 44 43 v INVENTOR. 62/1006WILSON,

ATTORNEYS.

Patented Sept. 27, 1938 CARBURETOR Claude Wilson, Los Angeles, Calif.

Application October 2'7, 1936, Serial No. 107,807

1 Claim.

This invention relates to carburetors, and the general object of theinvention is to provide an improved carburetor, which will mosteffectively break up the gasoline and air into finer particles, and moreintimately mix the same than is possible with other carburetors, thusproviding for more complete combustion of the gas and greater power andmileage per unit of gas.

My carburetor is particularly applicable to gas engines of the V type,but may be used to advantage on other types of gas engines.

Other objects and advantages will appear hercinafter.

The invention is illustrated in the annexed drawing, which forms a partof this specification and in which Fig. 1 is a side elevation of myinvention, and the generator of a V-type gas engine, said generatorbeing shown connected to my invention for operating the same.

Fig. 2 is a longitudinal vertical section of my invention taken on line22 of Fig. 3.

Fig. 3 is a front end elevation of my invention.

Fig. 4 is a transverse vertical section taken on line l@ of Fig. 2.

Fig. 5 is a fragmentary longitudinal section taken on line 55 of Fig. 3illustrating one of the fuel inlet valves.

Fig. 6 is a fragmentary horizontal section taken on line 6--6 of Fig. 2,but showing the rotary gas mixer in elevation.

Referring more particularly to the drawing in which corresponding partsare designated by the same reference characters, my carburetor comprisesgenerally a casing I, provided with an air inlet 2, and gas outlet 3, arotary gas mixer 4 in said casing; a hand throttle fuel inlet needlevalve 5; and a foot throttle fuel inlet needle valve 5.

The casing l includes a cylindrical mixing chamber 1 closed at one end.by a head 8 and at the other end by a head 9 in which the air inlet 2and an air chamber it! are formed, with said air inlet leading into saidair chamber. The gas outlet 3 leads from the lower side of the mixingchamber and is connected to the inlet manifold ii of a gas engine. Thecasing head 9 is provided with a port 52 in its lower portionthroughwhich air passes from the lower end of the air chamber it into the lowerportion of the mixing chamber '5. The casing head 9 is also providedwith two tubular fuel inlets l3 and I4 located in the upper portion ofsaid head in horizontally-spaced relation and extending a short distanceinto the adjacent end of the mixing chamber 1.

In the air inlet 2 is located a butterfly outlet valve [5 on the shaftI6 of which is secured an operating arm H to which is connected aconventional operating means not shown.

The construction of the fuel inlet valves 5 and '6 is the same, eachcomprising a conical valve closing member I8, a stem l9 on the inner endof which said closing member is formed, aseat for said closing memberand a needle 2| extending inwardly from said closing member through aseat sleeve 22 into a nozzle 23, in the base 24 of which nozzle saidseat sleeve 22 is fitted, and said nozzle base is screw seated at 25 inthe inner end of a valve chamber 26 which chamber is fitted in anopening 21 in the outer wall of the air chamber 10, and the innerportion of said valve chamber extends into said air chamber, while theouter portion of said valve chamber extends outside of said air chamber,there ,4

being an external flange 28 on said valve chamber 26, which engages theoutside of the outer wall of said air chamber and is secured to saidwall by screws 29. In the outer end of the valve chamberv 26 a packingbox 30 is screw seated at -3|, through which packing box extends thevalve stem I9. The outer portion of the valve chamber 26 is formed witha fuel inlet nipple 32, the outer end portion of which is threaded as at33 for connection to a fuel line (not shown). The valve nozzle 23 of thefuel-inlet valve 5 extends into the tubular fuel inlet l3, while thenozzle 23 of the fuel-inlet valve 6 extends into the tubular fuel inletM. The inner end of the valve chamber 26 of the fuel-inlet valves 5 and6 extends to a short distance from the outer side of the casing head 9,providing restricted spaces 34 between the inner ends of said valvechambers and said head 9, through which spaces air passes from the airchamber Ill through the tubular fuel inlets l3 and l 4 respectively intothe adjacent end of the mixing chamber 1.

In the mixing chamber 1 is mounted the rotary gas mixer 4 whichcomp-rises a shaft 35 a plurality of perforated blades 36 and apluralityof perforated blades 31. The shaft 35 is journaled at its ends in ballbearings 38 and 39, respectively, in the heads 3 and 9, respectively, ofthe mixing chamber 1, and one end of said shaft extends outwardlythrough the head 8. A spider 4|! is secured on said shaft intermediateits ends and centrally over the gas outlet 3 in the mixing chamber 1.The blades 36 are secured at their inner ends to the spider 40 and attheir outer Cir ends to a ring 4| surrounding the shaft 35, and areinclined in the direction of rotation of the mixer 4, from said ring tosaid spider, so that said blades can never be brought into axialalignment with the valve nozzles 23, which would intermittently partlyshut 01f the discharge of fuel from said nozzles into the mixing chamber1 during rotation of the mixer 4 and impair the efliciency of thecarburetor. The blades 3'! are secured at their inner ends to the spider4B and at their outer ends to a ring 42 surrounding the shaft 35 and areinclined in the direction of ro'- tation 9, the mixer 4 from said ringto said spider, and the blades 37 are positioned directly opposite theblades 35 so that the fuel and air entering the mixing chamber 1 fromthe valve nozzle 23 and through the tubular inlets l3 and I l and port[2, between any two blades 36, will fill the space between said bladesand the two oppositely disposed blades 37, and the mixed fuel and airwill be directed during rotation of the mixer 4 by the inclination ofthe blades 36 and 3?, centrally of the lower part of the mixing chamber1 and out of said chamber through the gas outlet 3.

The outer end of the mixer shaft 35 is connected by a universaljoint 43to the shaft 44 of a generator 45 of a V-type gas engine, or to anysuitable driven shaft.

The outer ends of the stems l 9 of the fuel-inlet valves 5 and 6 areconnected respectively by universal joints 46 and 41 to a hand throttleand a foot throttle respectively of a motor vehicle.

The operation of my invention is as follows:

The air inlet valve l5 being open to admit sufficient air through theinlet 2 into the air chamber l and through port l2 and inlets l3 and I4into the mixing chamber 1, and the hand throttle valve 5 being opened toadmit fuel through the tubular inlet l3, the generator 45 is put inoperation by the engine starter, and the rotary gas mixer 4 is rotatedby the generator, through the universal joint 43, whereupon the fuel,admitted by the valve 5, and the air, admitted through port I 2 andtubular inlets l3 and I4, into the mixing chamber 1, are finely brokenup and thoroughly mixed by the perforated blades 35 and 31 of therotating mixer 4, and the mixed gas is directed by the angularity ofsaid perforated blades out of the mixing chamber through the gas outlet3 into the engine manifold II and the engine (not shown). When theengine is started the valve 5 is closed and the foot throttle valve 6 isopened, whereupon fuel is admitted through said valve and the tubularinlet I4 into the mixing chamber 1, and said fuel is broken up and mixedwith the air in said mixing chamber and delivered through the outlet 3and intake manifold ll into the engine as aforesaid.

I claim:

In a carburetor, a cylindrical mixing chamber having a fuel and airinlet in one end thereof and a mixture outlet in its cylindrical wallsubstantially at its central point, a rotary gas mixer mounted in saidmixing chamber, said rotary gas mixer comprising a shaft extendingaxially of said mixing chamber and a plurality of substantiallyradially-extending perforated flat blades, the blades along the lengthof said axial shaft being slightly inclined from their opposite ends tothe central point of said rotary gas mixer, and the inclination of saidblades being in the di1'e"- tion of rotation of said rotary gas mixer.

CLAUDE WILSON.

